AD6676EBZ datasheet(14/90 Pages) AD

14 / 90 page

AD6676

Data Sheet

Rev. D | Page 14 of 90

NOMINAL PERFORMANCE FOR IF = 140 MHz (μW POINT-TO-POINT RECEIVERS)

FIF = 140 MHz, BW = 56 MHz or 112 MHz, FADC = 3.2 GHz, attenuator = 0 dB, LEXT = 43 nH, maximum PIN_0dBFS setting, fDATA_IQ =

200 MSPS, nominal supplies, shuffler enabled (every clock cycle), with default threshold settings, unless otherwise noted.

0.5

–2.0

–1.5

–1.0

–0.5

200

170

150

130

190

180

160

140

120

110

100

FREQUENCY (MHz)

56MHz BW SETTING

112MHz BW SETTING

Figure 16. IF Pass Band Flatness (Includes Digital Filter)

INPUT FREQUENCY (MHz)

100 110 120 130 140 150 160 170 180 190 200

–162

–160

–158

–156

–154

–152

–150

–148

–146

–144

BW SETTING OF 112MHz

(IBN = –72.2dBFS)

BW SETTING OF 56MHz

(IBN = –80.5dBFS)

Figure 17. NSD with No Signal, IBN = 112 MHz and 56 MHz

–90

–100

–110

–120

–80

–70

–60

–50

–40

–30

–20

–10

240

140

160

180

100

200

120

220

INPUT FREQUENCY (MHz)

NBW = 9.2kHz

IBN = –88dBFS

14MHz

QAM1024

AT –52dBFS

CNR = 36dB

2.5× CH BW =

35MHZ

–19.7dBm CW INTERFERER TONE AT –22dBFS

Figure 18. Spectral Plot of CW Interferer Dynamic Range for QAM1024,

Channel BW = 14 MHz at Sensitivity Level with CW Interferer 30 dB Higher at

35 MHz Offset

–5

–10

–15

–20

–25

–30

–35

0600

450

350

250

550

500

400

300

200

150

100

FREQUENCY (MHz)

56MHz BW SETTING

112MHz BW SETTING

Figure 19. Wideband Frequency Response (Before Digital Filter)

–75

–80

–85

–90

–95

–44

–2

–5

–8

–11

–14

–17

–20

–23

–26

–29

–32

–35

–38

–41

INPUT POWER (dBm)

PIN_0dBFS = –2.7dBm

CH BW = 56MHz

CH BW = 28MHz

CH BW = 14MHz

CH BW = 7MHz

Figure 20. IBN vs. Swept Single Tone Input Power over Channel BW = 7 MHz,

14 MHz, 28 MHz, and 56 MHz, CW Blocker at 350 MHz

–90

–100

–110

–120

–130

–80

–70

–60

–50

–40

–30

–20

–10

INPUT FREQUENCY (MHz)

NBW = 9.6kHz

TWO TONES AT

–8dBFS (–10.7dBm)

AT 137.5MHz

AND 142.5MHz

115

120

125

130

135

140

145

150

155

160

165

–101dBFS

–100dBFS

Figure 21. Two-Tone IMD Performance

(f1 = 137.5 MHz, f2 = 142.5 MHz)

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